UniPlan: 統合PDDL定式化による移動マニピュレーションの視覚言語タスクプランニング
UniPlan: Vision-Language Task Planning for Mobile Manipulation with Unified PDDL Formulation
大規模屋内環境での長期的な移動マニピュレーションのため、シーン構造・視覚情報・ロボット能力をPDDLに統合し、VLMで物体を接地して既存のPDDLソルバで計画を生成するシステムを提案した。
詳しい要約
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著者: Haoming Ye, Yunxiao Xiao, Cewu Lu, Panpan Cai
分類: cs.RO
原文アブストラクト
Integration of VLM reasoning with symbolic planning has proven to be a promising approach to real-world robot task planning. Existing work like UniDomain effectively learns symbolic manipulation domains from real-world demonstrations, described in Planning Domain Definition Language (PDDL), and has successfully applied them to real-world tasks. These domains, however, are restricted to tabletop manipulation. We propose UniPlan, a vision-language task planning system for long-horizon mobile-manipulation in large-scale indoor environments, that unifies scene topology, visuals, and robot capabilities into a holistic PDDL representation. UniPlan programmatically extends learned tabletop domains from UniDomain to support navigation, door traversal, and bimanual coordination. It operates on a visual-topological map, comprising navigation landmarks anchored with scene images. Given a language instruction, UniPlan retrieves task-relevant nodes from the map and uses a VLM to ground the anchored image into task-relevant objects and their PDDL states; next, it reconnects these nodes to a compressed, densely-connected topological map, also represented in PDDL, with connectivity and costs derived from the original map; Finally, a mobile-manipulation plan is generated using off-the-shelf PDDL solvers. Evaluated on human-raised tasks in a large-scale map with real-world imagery, UniPlan significantly outperforms VLM and LLM+PDDL planning in success rate, plan quality, and computational efficiency.
